You can't. The valet key doesn't have the capacity to do more than it does and you can't add capacity to it unless you have the standard key and even then it would take skills beyond most people's ability.
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No, W123 grille is narrower - there is no interchangeability. 30+ years as an M-B Parts Manager.
According to my handbook it is 70 litres (15.4 Imperial Gallons)
Close to the rear axle, behind the rear passenger footwell, under the car.
None. The only W123-series chassis to have CCs are the 1985 California models.
Mercedes cars are manufactured by body type. I am assuming that you have a W123 car body. The 300 and 230 are just the engine types. The hood, and anything else, is interchangeable.
In the 1981 Mercedes-Benz 230 W123, the fuel pump is located within the fuel tank. It is an electric fuel pump, which is typically accessed by removing the rear seat and then the access panel on top of the fuel tank. For servicing or replacement, it's important to ensure the fuel system is depressurized before attempting any work.
They both are the W123 body type. A 240D has a 2.4 liter 4 cylinder diesel engine, and a 300SD has a 3.0 liter 5 cylinder turbocharged diesel engine. The 300SD is also a higher end S class model.
There are two connections, the one labeled TD connect to the TD output of ignition control box (a junction connection is on fender) and the other connect to a power source.
No, the 1983 Mercedes-Benz 300TD does not have airbags. Airbags were not commonly included in vehicles until the late 1980s and early 1990s. The 300TD, being part of the W123 series, was designed before these safety features became standard. Instead, it may have other safety features typical of that era, such as crumple zones and reinforced passenger compartments.
An unstable idle in a Mercedes 280E W123 can be caused by several factors, including vacuum leaks, which disrupt the air-fuel mixture, or a malfunctioning idle air control valve. Additionally, issues with the ignition system, such as worn spark plugs or faulty ignition timing, can lead to irregular idling. Dirty fuel injectors or a clogged fuel filter may also restrict fuel flow, contributing to unstable engine performance. Regular maintenance and diagnostics are essential to pinpoint and resolve the issue.
Mercedes goes by body styles, yet classifies them by engine type. For instance, the 300D and the 280E are both W123 body styles. D is obviously for diesel and E is for gasoline fuel injected. The only differences between the 300D and 280E are the engines, electrical wiring, and fuel systems.